Best Time to Fly BNA to BUF: On-Time Stats by Hour & Airline
Nashville International → Buffalo Niagara International
Data through July 2026 · Last updated October 18, 2026
370 flights were scheduled from Nashville (BNA) to Buffalo (BUF) in the last 12 months, and 75.4% of those that flew arrived on time, 2.2 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (93% on time) and June the worst month (48%).
The cancellation rate was 0.8% (US average 1.8%).
BNA to BUF on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 75.4% | 48 min | 0.8% | 370 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BNA to BUF
On-time arrival % by scheduled departure hour (local time), 674 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 96.9% | 3.0% | 33 |
| 10am–11am | 92.4% | 0.8% | 119 |
| 11am–12pm | 79.0% | 1.9% | 108 |
| 12pm–1pm | 84.3% | 0.0% | 121 |
| 1pm–2pm | 76.5% | 0.0% | 119 |
| 2pm–3pm | 65.7% | 0.0% | 99 |
| 3pm–4pm | 70.8% | 0.0% | 48 |
| 4pm–5pm | Limited data | 22 | |
| 8pm–9pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BNA to BUF
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 13 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 29 | ||
| Summer peak (Jun 15 - Aug 15) | 63.7% | -18.5 pts | 0.0% | 124 |
| All other days | 82.2% | — | 0.6% | 508 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).